We're joined by Daniel Freeman, a Wellcome Trust fellow from the institute of psychiatry at Kings College London. In a podcast first, we attempt to recreate his experiment on paranoia. Daniel also claims the condition is on the increase.

An actual time lord talks minutes and seconds with us. David Rooney is the curator of time at the Royal Observatory Greenwich. This week's Science Weekly Extra podcast is an extended interview with David who discusses the decimalisation of time, as well as those pips (and no that's not the name of a band from the 60s).

Ahead of this week's re-reading of the human fertilisation and embryology bill, we look at what will be discussed.